CBSE /Class 9
Science MCQ Based On Sound introduction
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CBSE Class 9 Science Sound introduction
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Sound is a longitudinal wave and a mechanical wave.
This region is created when a vibrating object moves backward.
It is a space that is completely empty of all substances.
Read all the options carefully.
use the formula of wavelength.
What is the common term for it?
What is the relation between speed, wavelength and frequency?
Speed can be defined as total distance divided by total time.
Sound waves can travel through a medium like solid, liquid or gas.
Frequency is defined as the number of waves produced in one second.
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